Martha and the Vandellas is an American vocal group formed in 1960, known for their influential role in the Motown sound. The group was led by Martha Reeves and included members Rosalind Ashford and Betty Kelley. They gained popularity in the 1960s with hits like "Dancing in the Street" and "Heat Wave," which showcased their energetic performances and soulful harmonies. The Vandellas were part of the larger Motown label, which produced many successful artists during the era. Their music combined elements of R&B, soul, and pop, contributing to the cultural landscape of the time. The group remains a significant part of music history.